Plymouth, Pennsylvania Weather
Fireflies rise from the lawn. Day 77 of spring. Read this microseason across nine climate regions →
Plymouth weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 3Clear——84°47°—
- ThursdayJun 4Overcast——85°61°+1°
- FridayJun 5Overcast——84°63°-1°
- SaturdayJun 6Showers58%0.11″87°61°+3°
- SundayJun 7Light Showers58%0.06″76°62°-11°
- MondayJun 8Light Drizzle14%0.02″79°57°+3°
- TuesdayJun 9Mostly Clear——82°51°+3°
Ozone at AQI 39. AQI up 7 over the last 6 hours (gradual rise). Overcast through the UV peak window (cloud cover ~84%) — afternoon ozone should stay flat.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 39. Overcast through the UV peak window (cloud cover ~84%) — afternoon ozone should stay flat.
- Present
- AQI 39
- UV peak
- 0.1 at 1 PM
- Sky at peak
- overcast
- Projected peak
- AQI 5
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 3:36 AM
- Moonset
- 1:00 PM
- In sign
- ♑︎ Capricorn
Fireflies rise from the lawn
Plymouth at a glance
- Today vs. normal: 4°F above the seasonal normal for this latitude
- Last frost: April 23 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 4, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.